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UNTTED STATES PATENT CEEICE.

FINLAY SINCLAIR, OF CCVENTRY, ENGLAND, ASSIGNOR TO THE PNEUMATIC TYREAND BOOTHS CYCLE AGENCY, LIMITED, OE DUBLIN, IRELAND.

PN EU MATIC TIRE.

SPECIFICATION forming' part of Letters Patent No. 480,349, dated August9, 1892.

Application filed February 15, 1892. Serial No. 421,491. (No model.)

1 To all whom it may concern: end of said jacket and of a widthsufficient to Be it known that I, FINLAY SINCLAIR, a extend over theouter or tread portion of the subject of the Queen of Great Britain,residtire. This flap,while it serves to firmly unite ing at Coventry, inthe county of Varwick, the ends ot the jacket to form an endless con- 5England, have invented a new and useful Imlining-tube and prevents thestrain to which 5.5

provement in Pneumatic Tires, of which the the tire is subjected inhusefrom separating following is a specification, reference being the endsof the tube, particularly along the had to the drawings accompanying andforniouter or tread portion where the strain is ing a part of the same.greatest, may at any time be stripped back ro This invention is animprovementin pneufor the purpose of opening the said tube and 6o maticor inflatable tires for bicycles and other permitting access to therubber tube, within wheels, more especially applicable to the parwhichmay be out and replaced by a new tube ticular form of tire described andshown in or shifted around to expose any portion to the reissued LettersPatent No. 11,153, dated opening.

15 March 24, 1891. The improvement as applied to a specially- 65 In theconstruction or manufacture of the constructed tire is illustrated inthe accomparticular tire referred to it is now usual to panying`drawings. surround the grooved metallic fclly of the Figure 1 is aperspective view of a section wheel with a layer of canvas secured bycemof tire and telly, parts of the same being rezo ent. Around this islaid the tire proper, moved to exhibit the construction. Fig. 2 is 7owhich consists of an expansible rubber tube a longitudinal section ofthe same. contained in a tubular non-expansible conin- A is thecanvas-covered felly. ing-jacket, and the whole is then secured to B isthe inner inflatable tube ot' india-rubthe wheel by the flaps or edgesof a canvas ber.

z5 strip attached to or forming part of the said C C are the two endsol' a non-expansible 75 non-eXpansible jacket, and which are drawn conlining tube or jacket of canvas or the like. around the edges of thetelly and secured to D is a strip of canvas cemented or otherthe innerface of the same. A rubber covcrwise secured over the tube C C andhaving ing is secured over or around the non-expanits edges carriedaround and cemented to the 3o sible jacket. In this as in other forms oftire inner or under face of the telly A. 8o which involve an innerrubber or expansible E is the rubber covering cemented to the tube and asurrounding or confining` non-exstrip D. pansible jacket, andparticularly where theV F is the iiap or tongue extending from onelatter, whether formed of one or more pieces, of the ends, as C', of theconfining-tube, and

35 is made up before application to the felly and which, when the twoends of said tube are 85 the rubber tube drawn into it, considerablebrought together, is drawn over and cemented difficulty is experiencedin gaining access to to the outside of the end C. This tongue theinterior rubber tube in case of puncture may extend over a greater orless portion of of the latter or generally for purpose of rethecircumference of the tube, provided it 4o pair or renewal, and hithertowhere for lthe serve adequately to unite the two ends and 9onon-expansible jacket a seamless woven tube form a practically endlesstube or confininghas been employed this necessitated the cutcover.

ting of the woven tube, by which the subse- It is usual to place theinIiating-valve G quent strength and durability of the tire was near thepoint at which the two ends C C 4 5 impaired. come together, so thatwhen the tube is opened 95 According to the present improvement the theValve, in case its construction and mode conningjacket is primarily of alength of attachment permits of it, may be more greater than thecircumference of the telly, readily detached to allow the rubber tube toand a portion of its end is cut away, leaving be shifted around thewheel.

5o a flap which maybe cemented to the opposite The tongue may be readilysecured to the Ioo y end C after being: detached therefrom, and by thismeans access is readily aiorded to the interior of the tire.

In this particular tire it is only necessary when reopening to stripback the rubber covering and strip D to obtain access to the tongue or'flap F.

I claim- 1. In a pneumatic tire of the kind described, the combination,with an inner expansible or infiatable tube, of a tubular non-expansibleconning-jacket of canvas, the ends of which are secured together bya Hapor tongue from one overlapping and secured to the other, as set forthu2. The combination, with a felly A, of arubber infiatable tube B, and atubular canvas jacket the contiguous ends of which are united by a Hapor tongue F, extending from the outer or tread portion of one andoverlyzo ing and cemented to the other, as described.

FINLAY SINCLAIR. Vitnesses:

W. R. SHELDEN, ERNEST HARKER.

